A novel non-extractive sequential injection procedure for determination of cadmium

Jana Škrlíková, Vasil Andruch, Hana Sklenářová, Petr Solich, I. Balogh, F. Billes

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents a novel non-extractive procedure for cadmium determination in a sequential injection (SI) system. The reaction is based on the formation of a complex by Cd(II), iodide ions, and 2-[2-(4-dimethylamino-phenyl)-vinyl]-1-ethyl-quinolinium iodide (R), commonly known as Quinaldine red. Complex-formation results in significant changes in the UV-Vis spectrum of R: the peak is significantly broadened and a shoulder appears near 618 nm. It is important to emphasize that no surfactant addition is needed for solubilization of the system. Under the optimum reaction conditions the calibration plot was linear in the range 1.12-11.24mgL-1 Cd and the detection limit was 0.24 mgL-1 Cd. The method was tested for the analysis of mineral water and pharmaceutical samples spiked with cadmium.

Original languageEnglish
Pages (from-to)431-445
Number of pages15
JournalAnalytical Letters
Volume44
Issue number1-3
DOIs
Publication statusPublished - Jan 2011

Fingerprint

Iodides
Cadmium
Mineral Waters
Injections
Surface-Active Agents
Drug products
Calibration
Limit of Detection
Surface active agents
Minerals
Ions
Pharmaceutical Preparations
Water
quinaldine red

Keywords

  • 2-[2-(4-dimethylamino-phenyl)-vinyl]-1-ethyl-quinolinium iodide
  • Cadmium
  • Complexation
  • Green analytical chemistry
  • Sequential injection analysis

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry
  • Spectroscopy

Cite this

A novel non-extractive sequential injection procedure for determination of cadmium. / Škrlíková, Jana; Andruch, Vasil; Sklenářová, Hana; Solich, Petr; Balogh, I.; Billes, F.

In: Analytical Letters, Vol. 44, No. 1-3, 01.2011, p. 431-445.

Research output: Contribution to journalArticle

Škrlíková, Jana ; Andruch, Vasil ; Sklenářová, Hana ; Solich, Petr ; Balogh, I. ; Billes, F. / A novel non-extractive sequential injection procedure for determination of cadmium. In: Analytical Letters. 2011 ; Vol. 44, No. 1-3. pp. 431-445.
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